Research Of Wear Measurement Algorithm Of Skate Edge And Its Hardware Implementation

In skating motion, in order to improve the efficiency and quality of skate sharpening, it's necessary to develop automatic skate mullers whose key technique is how to auto-detect the edge wear. In my paper, a method is put forward in order to solve this problem. The method is expatiated orderly from theoretics, algorithm to implementation.1. Theoretics layer: theoretical measurement formulas of wearIn skating, the skate edge will be abraded in different degree because of different truck and different kinds of skates, and the edge of abraded skate can be approximated to an ellipse. Paper[1] put forward a method that approximated the edge to an ellipse, and got the theoretical formula between the scattered light intensity and the radii of the edge. With the result, applying CCD non-contact measurement, a method for measuring the edge wear of skate is put forward in the paper.Shown in Figure 1, the ellipse model of the skate edge is set up in rectangular axis, where a ,b respectively presents major semi-axis and minor semi-axis of the ellipse; x ? z plane is the cross-section of the edge; y is the direction along the edge; B is the tangent point of profile or working side with the edge;αis the internal angle of OB with z -axis, where O is the origin; h is the edge wear , and the internal angle of profile with working side is 90°. The cross-section shape of the edge is described by mathematic formulas as below:where, H is the edge length investigated; and...